package com.jieshuibao.service;

import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import net.sf.json.JSONObject;

import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.jieshuibao.model.domain.HttpResult;

@Service
public class HttpClientService {

	@Autowired
	private CloseableHttpClient httpClient;
	@Autowired
	private RequestConfig requestConfig;
	
	/**
	 * 重写X509TrustManager
	 */
	private static TrustManager myX509TrustManager = new X509TrustManager() {
		
		@Override
		public X509Certificate[] getAcceptedIssuers() {
			return null;
		}
		
		@Override
		public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
			
		}
		
		@Override
		public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
			
		}
	};

	/**
	 * 执行GET请求
	 * 
	 * @param url
	 * @return
	 * @throws IOException
	 * @throws ClientProtocolException
	 */
	public String doGet(String url) throws ClientProtocolException, IOException {
		// 创建http GET请求
		HttpGet httpGet = new HttpGet(url);
		httpGet.setConfig(this.requestConfig);

		CloseableHttpResponse response = null;
		try {
			// 执行请求
			response = httpClient.execute(httpGet);
			// 判断返回状态是否为200
			if (response.getStatusLine().getStatusCode() == 200) {
				return EntityUtils.toString(response.getEntity(), "UTF-8");
			}
		} finally {
			if (response != null) {
				response.close();
			}
		}
		return null;
	}

	/**
	 * 带有参数的GET请求
	 * 
	 * @param url
	 * @param params
	 * @return
	 * @throws URISyntaxException
	 * @throws IOException
	 * @throws ClientProtocolException
	 */
	public String doGet(String url, Map<String, String> params)
			throws ClientProtocolException, IOException, URISyntaxException {
		URIBuilder uriBuilder = new URIBuilder(url);
		for (String key : params.keySet()) {
			uriBuilder.addParameter(key, params.get(key));
		}
		return this.doGet(uriBuilder.build().toString());
	}

	/**
	 * 执行POST请求
	 * 
	 * @param url
	 * @param params
	 * @return
	 * @throws IOException
	 */
	public HttpResult doPost(String url, Map<String, String> params)
			throws IOException {
		// 创建http POST请求
		HttpPost httpPost = new HttpPost(url);
		httpPost.setConfig(this.requestConfig);
		if (params != null) {
			// 设置2个post参数，一个是scope、一个是q
			List<NameValuePair> parameters = new ArrayList<NameValuePair>();
			for (String key : params.keySet()) {
				parameters.add(new BasicNameValuePair(key, params.get(key)));
			}
			// 构造一个form表单式的实体
			UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(
					parameters, "UTF-8");
			// 将请求实体设置到httpPost对象中
			httpPost.setEntity(formEntity);
		}

		CloseableHttpResponse response = null;
		try {
			// 执行请求
			response = httpClient.execute(httpPost);
			return new HttpResult(response.getStatusLine().getStatusCode(),
					EntityUtils.toString(response.getEntity(), "UTF-8"));
		} finally {
			if (response != null) {
				response.close();
			}
		}
	}

	/**
	 * 执行POST请求
	 * 
	 * @param url
	 * @return
	 * @throws IOException
	 */
	public HttpResult doPost(String url) throws IOException {
		return this.doPost(url, null);
	}

	/**
	 * 提交json数据
	 * 
	 * @param url
	 * @param json
	 * @return
	 * @throws ClientProtocolException
	 * @throws IOException
	 */
	public HttpResult doPostJson(String url, String json)
			throws ClientProtocolException, IOException {
		// 创建http POST请求
		HttpPost httpPost = new HttpPost(url);
		httpPost.setConfig(this.requestConfig);
		httpPost.addHeader("Content-type","application/json");
		if (json != null) {
			// 构造一个form表单式的实体
			StringEntity stringEntity = new StringEntity(json,
					ContentType.APPLICATION_JSON);
			// 将请求实体设置到httpPost对象中
			httpPost.setEntity(stringEntity);
		}

		CloseableHttpResponse response = null;
		try {
			// 执行请求
			response = this.httpClient.execute(httpPost);
			return new HttpResult(response.getStatusLine().getStatusCode(),
					EntityUtils.toString(response.getEntity(), "UTF-8"));
		} finally {
			if (response != null) {
				response.close();
			}
		}
	}
	
	/**
	 * ios  内购发送请求
	 * @param url
	 * @param code
	 * @return
	 */
	public String sendHttpsCoon(String url, String code){
		if(url.isEmpty()){
			return null;
		}
		try {
			//设置SSLContext
			SSLContext ssl = SSLContext.getInstance("SSL");
			ssl.init(null, new TrustManager[]{myX509TrustManager}, null);
			
			//打开连接
			HttpsURLConnection conn = (HttpsURLConnection) new URL(url).openConnection();
			//设置套接工厂
			conn.setSSLSocketFactory(ssl.getSocketFactory());
			//加入数据
			conn.setRequestMethod("POST");
			conn.setDoOutput(true);
			conn.setRequestProperty("Content-type","application/json");
	        
	        JSONObject obj = new JSONObject();
	        obj.put("receipt-data", code);
	        
	        BufferedOutputStream buffOutStr = new BufferedOutputStream(conn.getOutputStream());
	        buffOutStr.write(obj.toString().getBytes());
	        buffOutStr.flush();
	        buffOutStr.close();
	        
	        //获取输入流
	        BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
	        
	        String line = null;
	        StringBuffer sb = new StringBuffer();
	        while((line = reader.readLine())!= null){
	        	sb.append(line);
	        }
	        return sb.toString();
		
		} catch (Exception e) {
			return null;
		}
	}
}